Clymene Dolphin
Stenella clymene


Scientific Name: Stenella clymene

Other Names: Short-snouted Spinner Dolphin, Helmet Dolphin, Senegal Dolphin.

Suborder: Odontoceti

Family: Delphinidae

Until 1981 the Clymene was considered a type of Spinner dolphin but it gained species status due to DNA evidence. Colouration is grey with dark, pointed flippers, a dark eye-flipper stripe and a dark cape which dips gently over the eye and deeply below the dorsal fin almost to the white underbelly. The beak is shorter than a Spinner's beak and darkly tipped, with striations near the base of the beak (this is variable).

Clymene's are fast swimmers which often bowride but can be shy in some areas. Some have been seen spinning similarly to Spinner Dolphins but their spins are usually more awkward and often incomplete rotations.

Maximum Length 

Adult: 1.75-2m. 

Newborns: 0.8m 

Maximum Weight
Adult: 90kg

 Clymene Dolphin Ecology

Range: The Clymene Dolphin is found in the tropical and subtropical waters of the Atlantic.

Usual Habitat: Deep water, so mostly occurs offshore.

Usual group size: 5 - 50.

Main Diet: Mesopelagic fish and squid usually caught at night at moderate depth.

Local population: Unknown

Global range of the Clymene Dolphin

Clymene Dolphins are likely to be found in the dark blue areas 

 Conservation Information 

Protection and Conservation Status

IUCN Conservation Status: 
Dolphins are listed as "Data Deficient" on the IUCN red list.

SPAW Protocol:  Clymene Dolphins are cetaceans, which are listed under Annex II of the SPAW protocol. As such they require total protection under article 11 of this protocol which prohibits the "taking, possession, killing and commercial trade of the species, their parts or products". The SPAW protocol was created to help with the implementation and promotion of the Ramsar Convention and the Convention on Biological Diversity. The Annexes of the SPAW protocol can be found here.

Local Laws: Cetaceans are protected under the Conservation of Wildlife Act of Trinidad and Tobago which offers protection to all species not listed under the second or third schedules of this act.

 Reports of Clymene Dolphins in Trinidad and Tobago

There are currently no reports of this species in Trinidad and Tobago.

The above information was obtained from the following sources:

  • A Princeton Field Guide: Whales Dolphins and Other Marine Mammals of the World by Hadoram Shirihai and Brett Jarrett (2006)
  • Smithsonian Handbooks: Whales Dolphins and Porpoises by Mark Carwardine and illustrated by Martin Camm (2002)
  • The Whale and Dolphin Conservation Society's Species Guide at
  • The IUCN Redlist at
  • The SPAW protocol Annexes with links available at,83

We would like to thank the following people for the use of the art work and photographs:

  • Al√ęsha Naranjit (Illustration of Clymene Dolphin)
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